Limited soundstage between speakers

rrm, it is not you that have the a problem. It is everybody else.  A well set up system will not image beyond it's speakers with normal program sources. Some engineers will do tricks with phasing and delays to throw images beyond the speakers for special effect like Roger Waters's  Amused to Death album. If a system is imaging beyond it's speaker it is because reflections in the room are smearing the image that way. It is an indication that more control over room acoustics is indicated. 

If you want a wider sound stage either move your speakers a little further apart or move your listening position in closer. If you like a big life size image buy line source speakers like Magnepans or Sound Labs. 

As others have said, placement/positioning of speakers along with the recording and how much out-of-phase information is contained on it are key almost regardless of speaker design. Most of the music in my system occurs between the speakers with lots of depth and 3D soundstage, but I’ve got an Opus 3 recording where a good amount of the music extends 6’ outside the speakers. I think Roger Waters’ Amused to Death CD also incorporates a good amount of those techniques. Bottom line — if you’re happy with what’s happening between the speakers I wouldn’t much worry about it. But, pulling the speakers out more and reducing toe-in might help, AND ITS FREE! How many things in this hobby can you say that about? Best of luck.

That speak a lot about your room and system relation...

Then all my soundstage/imaging/listener envelopment effect are distortions?

Phasing errors?

Half of my recorded albums at LEAST and more present sound outside of the back/front and left /right vertical plane between the speakers, and sometimes the two together and in some case even behind my back or beside my ears like in headphone ?

It is way more probable that your room /system is not up to the task by your own ignorance of room acoustic settings than by my own wrongdoing ? 😁😊

Invoking phase discrepencies to explain a COHERENT acoustical wotking in my room is ridiculous...

Think about your own room/system. defect....I can help you.... Disconnect your equalizer and open your ears....

 A well set up system will not image beyond it's speakers with normal program sources. 

Well,I guess I like the distortion that causes the illusion of expanded soundstage. I have no problem with that. 

Mahgister, What a rude post!

Who really knows what you hear in your room besides yourself and I fail to see anything in soix’s post that comments on you or your subjective beliefs. Some of what you have set forth in this thread and some others I’ve read makes good sense, but much of what you have said is so lacking in specifics as to make your post(s) incomprehensible. Clearly what soix has said is correct. You should research this subject more carefully and not just rely on your empirical conclusions and fire off such a self aggrandizing post.